The software company inks a lease for 106,000 square feet at the 72-story building, becoming its first private-sector tenant.

The software company MediaMath has completed a lease to take 106,000 square feet at 4 World Trade Center in lower Manhattan. According to Silverstein Properties, the 72-story, 2.3 million-square-foot office tower's landlord, the company will take the building's 44th, 45th and 46th floors for 15 years.

In return for creating an anticipated 1,000 new jobs, the company received $5.8 million in federally funded grants that were awarded to it by the Economic Development Corp. and Empire State Development, the city and state's economic development arms, respectively.

"The state is proud to support the company's major expansion in New York and we look forward to their continued growth," Gov. Andrew Cuomo said in a statement.